44
A. POWER MALFUNCTIONS
1. Main Disconnect Will Not Turn On
a.
PROBABLE CAUSES;
1) Sprinkler isolated power source OFF or disabled.
2) OL12 tripped or sprinkler circuit defective.
3) Sprinkler activated.
4) Sprinkler will not reset.
b.
POSSIBLE SOLUTIONS;
1) Verify red Sprinkler Power on main panel to be illuminated.
If ON go to
paragraph #3 below
If NOT ON verify isolated sprinkler power source to the dryer
Check sprinkler supply voltage at TB1
Pin #4 and Pin #5
If OK go to
paragraph #2 below
If none, check incoming line voltage
If none, check fuse disconnect switch
2) Check if OL12 has tripped.
If OK go to
paragraph #3 below
If tripped, check sprinkler circuit, then reset and test.
3) Check if sprinkler is activated...is the SPRINKLER RESET button lit?
If YES, press SPRINKLER RESET
Does the sprinkler reset?
If YES, attempt to turn ON the main disconnect again
If NO go to
paragraph #4 below and on page 45
4) Sprinkler will not reset, verify that the sprinkler hi-limit has not tripped. (
GREEN
light is off.)
If it has not tripped, check setting to be 550º F (273º C) and verify that the sprinkler RTD
(Resistive Temperature Device) is connected and has 100 ohms (100
W
) at 32º F (0º C)/109
ohms (109
W
) at 75º F (24º C)
Summary of Contents for ADS-464 II
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